Description
Window Size Overlay is a simple yet powerful tool for web developers and designers.
Instantly see your browser window size — no need to open DevTools or use clunky inspector tools.
Just glance at the corner of your screen to view:
- the current window size (viewport or full window),
- the device pixel ratio (@DPR),
- and the exact overlay position (freely configurable).
✨ Why you’ll love it:
✅ perfect for responsive design testing
✅ live window size overlay – always visible
✅ customizable position, size and behavior
✅ lightweight, fast and privacy-safe
Works seamlessly in the background and updates in real time.
Reviews
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Permissions (1)
Permissions
storageℹ Can store data locally in your browser
Details
| Version | 1.3.2 |
| Updated | Oct 28, 2025 |
| Size | 18.24KiB |
| First Seen | Mar 26, 2026 |
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